<template>
	<div id="subtmpl">
        <div class="inleft div" @click="substrict">-</div>
		<div class="incenter div" v-text="count"></div>
		<div class="inright div"  @click="add">+</div>
	</div>
</template>

<script>

	export default{ 
		data(){
            return{
                count:1//代表购买商品的数量
            }
        },

        methods:{
            substrict(){
                this.count--;
//				确保最小值为1
                if(this.count<1){
                    this.count=1
                }
                this.sendmessage();
            },
            add(){
                this.count++;
                this.sendmessage();
            },
            sendmessage(){
                this.$emit('dataobj',this.count)
            }
        }
	}

</script>

<style scoped>
    #subtmpl .div{
		width: 40px;
		height: 25px;
		line-height: 25px;
		border: 1px solid #000;
		display: inline-block;
		text-align: center;
	}
</style>